Unidentified people react on December 14, 2012 at the aftermath of a school shooting at a Connecticut elementary school that brought police swarming into the leafy neighborhood, while other area schools were put under lock-down, police and local media said. Local media quoted that the gunman had died at the Sandy Hook Elementary School in Newtown, Connecticut, northeast of New York City. At least 27 people, including 18 children, were killed on Friday when at least one shooter opened fire at an elementary school in Newtown, Connecticut, CBS News reported, citing unnamed officials. AFP PHOTO/DON EMMERT (Photo credit should read DON EMMERT/AFP/Getty Images)

Photo: DON EMMERT, Associated Press

Unidentified people react on December 14, 2012 at the aftermath of...

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A woman waits to hear about her sister, a teacher, following a shooting at the Sandy Hook Elementary School in Newtown, Conn., about 60 miles (96 kilometers) northeast of New York City, Friday, Dec. 14, 2012. An official with knowledge of Friday's shooting said 27 people were dead, including 18 children. It was the worst school shooting in the country's history.

Photo: Jessica Hill

A woman waits to hear about her sister, a teacher, following a...

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NEWTOWN, CT - DECEMBER 14: A woman holds a child as people line up to enter the Newtown Methodist Church near the the scene of an elementary school shooting on December 14, 2012 in Newtown, Connecticut. According to reports, there are about 27 dead, 18 children, after a gunman opened fire in at the Sandy Hook Elementary School. The shooter was also killed.

Photo: Douglas Healey, Getty Images

NEWTOWN, CT - DECEMBER 14: A woman holds a child as people line up...

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Police block off a section of Yogananda Street near a house belonging to the mother of a man who opened fire inside a Connecticut elementary school, killing 26 people, including 18 children, Friday, Dec. 14, 2012 in Sandy Hook, Conn.

Photo: AP

Police block off a section of Yogananda Street near a house...

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A woman talks to a state police officer at the scene of a shooting at Sandy Hook Elementary School in Newtown, Connecticut, Friday, December 14, 2012. Twenty-seven people, including 18 children, have been killed in a shooting at Sandy Hook Elementary School. (Cloe Poisson/Hartford Courant/MCT)

Photo: Cloe Poisson, McClatchy-Tribune News Service

A woman talks to a state police officer at the scene of a shooting...

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Ambulances leave an area near the scene of a shooting at the Sandy Hook Elementary School in Newtown, Conn., about 60 miles (96 kilometers) northeast of New York City, Friday, Dec. 14, 2012. An official with knowledge of Friday's shooting said 27 people were dead, including 18 children. (AP Photo/Jessica Hill)

Photo: Associated Press

Ambulances leave an area near the scene of a shooting at the Sandy...

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Unidentified people on December 14, 2012 leave the scene at the aftermath of a school shooting at a Connecticut elementary school that brought police swarming into the leafy neighborhood, while other area schools were put under lock-down, police and local media said. Local media quoted that the gunman had died at the Sandy Hook Elementary School in Newtown, Connecticut, northeast of New York City. At least 27 people, including 18 children, were killed on Friday when at least one shooter opened fire at an elementary school in Newtown, Connecticut, CBS News reported, citing unnamed officials. AFP PHOTO/DON EMMERT (Photo credit should read DON EMMERT/AFP/Getty Images)

An unidentified woman makes a phone call on December 14, 2012 at the aftermath of a school shooting at a Connecticut elementary school that brought police swarming into the leafy neighborhood, while other area schools were put under lock-down, police and local media said. Local media quoted that the gunman had died at the Sandy Hook Elementary School in Newtown, Connecticut, northeast of New York City. At least 27 people, including 18 children, were killed on Friday when at least one shooter opened fire at an elementary school in Newtown, Connecticut, CBS News reported, citing unnamed officials. AFP PHOTO/DON EMMERT (Photo credit should read DON EMMERT/AFP/Getty Images)

Photo: Associated Press

An unidentified woman makes a phone call on December 14, 2012 at...

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A man and woman leave the staging area for family around near the scene of a shooting at the Sandy Hook Elementary School in Newtown, Conn., about 60 miles (96 kilometers) northeast of New York City, Friday, Dec. 14, 2012. An official with knowledge of Friday's shooting said 27 people were dead, including 18 children. (AP Photo/Jessica Hill)

Photo: Associated Press

A man and woman leave the staging area for family around near the...

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Law enforcement canvass an area following a shooting at the Sandy Hook Elementary School in Newtown, Conn., about 60 miles (96 kilometers) northeast of New York City, Friday, Dec. 14, 2012. An official with knowledge of Friday's shooting said 27 people were dead, including 18 children. (AP Photo/Jessica Hill)

Photo: Associated Press

Law enforcement canvass an area following a shooting at the Sandy...

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Police vehicles are lined up near a triage near Sandy Hook Elementary School in Newtown, Conn., where authorities say a gunman opened fire inside an elementary school in a shooting that left 27 people dead, including 18 children, Friday, Dec. 14, 2012. (AP Photo/Julio Cortez)

Photo: Julio Cortez, ASSOCIATED PRESS

Police vehicles are lined up near a triage near Sandy Hook...

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FBI SWAT team members walk along Dickinson Drive near Sandy Hook Elementary School in Newtown, Connecticut, Friday, December 14, 2012. Twenty-seven people, including 18 children, have been killed in a shooting at Sandy Hook Elementary School. (Cloe Poisson/Hartford Courant/MCT)

Photo: Cloe Poisson, McClatchy-Tribune News Service

FBI SWAT team members walk along Dickinson Drive near Sandy Hook...

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Parents leave a staging area after being reunited with their children following a shooting at the Sandy Hook Elementary School in Newtown, Conn., about 60 miles (96 kilometers) northeast of New York City, Friday, Dec. 14, 2012. An official with knowledge of Friday's shooting said 27 people were dead, including 18 children. It was the worst school shooting in the country's history.

Photo: Jessica Hill

Parents leave a staging area after being reunited with their...

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State Police inspect the area on December 14, 2012 at the aftermath of a school shooting at a Connecticut elementary school that brought police swarming into the leafy neighborhood, while other area schools were put under lock-down, police and local media said. Local media quoted that the gunman had died at the Sandy Hook Elementary School in Newtown, Connecticut, northeast of New York City. At least 27 people, including 18 children, were killed on Friday when at least one shooter opened fire at an elementary school in Newtown, Connecticut, CBS News reported, citing unnamed officials. AFP PHOTO/DON EMMERT (Photo credit should read DON EMMERT/AFP/Getty Images)

Photo: DON EMMERT, Associated Press

State Police inspect the area on December 14, 2012 at the aftermath...

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Officials stand by a triage area near Sandy Hook Elementary School in Newtown, Conn., where authorities say a gunman opened fire inside the school in a shooting that left 27 people dead, including 20 children, Friday, Dec. 14, 2012. (AP Photo/Julio Cortez)

Photo: Julio Cortez, AP

Officials stand by a triage area near Sandy Hook Elementary School...

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Police stand before grieving residents following a shooting December 14, 2012 at Sandy Hook Elementary School on December 14, 2012 in Newtown, Connecticut. At least 26 people, including 20 young children, were killed when a gunman assaulted the school and another body was found dead at a second linked crime scene, police said. Police spokesman Lieutenant Paul Vance told reporters that the attacker killed 20 children and six adults, including someone that he lived with, at the Sandy Hook Elementary School in Newtown, Connecticut. The gunman also died at the scene, and a 28th body was found elsewhere.
AFP PHOTO / Don EMMERT (Photo credit should read DON EMMERT/AFP/Getty Images)

Photo: DON EMMERT, Associated Press

Police stand before grieving residents following a shooting...

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Two unidentified nuns on December 14, 2012 leave the scene at the aftermath of a school shooting at a Connecticut elementary school that brought police swarming into the leafy neighborhood, while other area schools were put under lock-down, police and local media said. Local media quoted that the gunman had died at the Sandy Hook Elementary School in Newtown, Connecticut, northeast of New York City. At least 27 people, including 18 children, were killed on Friday when at least one shooter opened fire at an elementary school in Newtown, Connecticut, CBS News reported, citing unnamed officials. AFP PHOTO/DON EMMERT (Photo credit should read DON EMMERT/AFP/Getty Images)

Photo: Associated Press

Two unidentified nuns on December 14, 2012 leave the scene at the...

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President Barack Obama wipes his eye as he talks about the Connecticut elementary school shooting, Friday, Dec. 14, 2012, in the White House briefing room in Washington. (AP Photo/Carolyn Kaster)

Photo: Carolyn Kaster, Associated Press

President Barack Obama wipes his eye as he talks about the...

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NEWTOWN, CT - DECEMBER 14: Connecticut Gov. Dan Malloy observes a moment of silence with mourners gathererd inside the St. Rose of Lima Roman Catholic Church at a vigil service for victims of the Sandy Hook School shooting December 14, 2012 in Newtown, Connecticut. Twenty-seven people are dead, including 20 children, after a gunman identified as Adam Lanza in news reports opened fire in the school. Lanza also reportedly died at the scene. (Photo by Andrew Gombert-Pool/Getty Images)

Photo: Pool, Getty Images

NEWTOWN, CT - DECEMBER 14: Connecticut Gov. Dan Malloy observes a...

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As hundreds stand outside St. Rose of Lima Roman Catholic Church, which was filled to capacity, a couple embrace during a healing service held in for victims of an elementary school shooting in Newtown, Conn., Friday, Dec. 14, 2012. A gunman opened fire at Sandy Hook Elementary School in Newtown, killing 26 people, including 20 children.

Photo: AP

As hundreds stand outside St. Rose of Lima Roman Catholic Church,...

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Mourners look in from outside during a vigil service for victims of the Sandy Hook Elementary School shooting, at the St. Rose of Lima Roman Catholic Church in Newtown, Conn. Friday, Dec. 14, 2012. A man killed his mother at their home and then opened fire Friday inside the elementary school where she taught, massacring 26 people, including 20 children, as youngsters cowered in fear to the sound of gunshots reverberating through the building and screams echoing over the intercom

Photo: AP

Mourners look in from outside during a vigil service for victims of...

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NEWTOWN, CT - DECEMBER 14: Mourners gather inside the St. Rose of Lima Roman Catholic Church at a vigil service for victims of the Sandy Hook School shooting December 14, 2012 in Newtown, Connecticut. Twenty-seven people are dead, including 20 children, after a gunman identified as Adam Lanza in news reports opened fire in the school. Lanza also reportedly died at the scene.

Photo: Pool, Getty Images

NEWTOWN, CT - DECEMBER 14: Mourners gather inside the St. Rose of...

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Mourners gather for a vigil service for victims of the Sandy Hook Elementary School shooting, at the St. Rose of Lima Roman Catholic Church in Newtown, Conn. Friday, Dec. 14, 2012. A man killed his mother at their home and then opened fire Friday inside the elementary school where she taught, massacring 26 people, including 20 children, as youngsters cowered in fear to the sound of gunshots reverberating through the building and screams echoing over the intercom

Photo: AP

Mourners gather for a vigil service for victims of the Sandy Hook...

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An American flag flies at half-staff as dawn breaks, Saturday, Dec. 15, 2012 in Newtown, Conn. A gunman walked into Sandy Hook Elementary School in Newtown Friday and opened fire, killing 26 people, including 20 children.

Photo: AP

An American flag flies at half-staff as dawn breaks, Saturday, Dec....

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WASHINGTON, DC - DECEMBER 14: People gather outside the White House to participate in a candle light vigil to remember the victims at the Sandy Hook Elementary School shooting in Newtown, Connecticut on December 14, 2012 in Washington, DC. According to reports, there are about 27 dead, 18 children, after a gunman opened fire in at the Sandy Hook Elementary School. The shooter was also killed.

Photo: Alex Wong, Getty Images

WASHINGTON, DC - DECEMBER 14: People gather outside the White...

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Sandy Hook Elementary School student Venesa Bajraliu and her mom Alberta Bajraliu near the scene of the fatal shooting at the school in Newtown, Conn. on Friday, Dec. 14, 2012. Twenty-seven people including 18 children were massacred in a horrific bloodbath at the Sandy Hook Elementary School this morning, sources told the Associated Press. Few other details were immediately available, and other reports contradicted those numbers.

Students and parents leave Saint Rosa of Lima School after a lockdown at that Newtown, Conn. facility on Friday, Dec. 14, 2012. Twenty-nine people including 22 children were massacred in a horrific bloodbath at the Sandy Hook Elementary School this morning, sources told the Associated Press. The gunman is dead, police said. Few other details were immediately available, and other reports contradicted those numbers.

The Stamford Police check out a home on Bartina Lane in Stamford, Conn. belonging to Peter Lanza the father of Ryan Lanza who is the alleged shooter at Sandy Hook Elementary School in Newtown, Conn on Friday December 14, 2012 where 26 were killed including 20 children.

Photo: Dru Nadler

The Stamford Police check out a home on Bartina Lane in Stamford,...

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The Stamford Police check out a home on Bartina Lane in Stamford, Conn. belonging to Peter Lanza the father of Ryan Lanza who is the alleged shooter at Sandy Hook Elementary School in Newtown, Conn on Friday December 14, 2012 where 26 were killed including 20 children

Photo: Dru Nadler

The Stamford Police check out a home on Bartina Lane in Stamford,...

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The Stamford Police check out a home on Bartina Lane in Stamford, Conn. belonging to Peter Lanza the father of Ryan Lanza who is the alleged shooter at Sandy Hook Elementary School in Newtown, Conn on Friday December 14, 2012 where 26 were killed including 20 children

Photo: Dru Nadler

The Stamford Police check out a home on Bartina Lane in Stamford,...

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The Stamford Police check out a home on Bartina Lane in Stamford, Conn. belonging to Peter Lanza the father of Ryan Lanza who is the alleged shooter at Sandy Hook Elementary School in Newtown, Conn on Friday December 14, 2012 where 26 were killed including 20 children

Photo: Dru Nadler

The Stamford Police check out a home on Bartina Lane in Stamford,...

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The Stamford Police check out a home on Bartina Lane in Stamford, Conn. belonging to Peter Lanza the father of Ryan Lanza who is the alleged shooter at Sandy Hook Elementary School in Newtown, Conn on Friday December 14, 2012 where 26 were killed including 20 children

Photo: Dru Nadler

The Stamford Police check out a home on Bartina Lane in Stamford,...

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After a horrific shooting at Sandy Hook Elementary School nearby, parents and children leave St. Rose School after a lockdown at the school in Newtown, Conn. on Friday December 14, 2012.

After a horrific shooting at Sandy Hook Elementary School nearby, parents and children leave the Sandy Hook Firehouse where they gathered for news about their children in Newtown, Conn. on Friday December 14, 2012.

In this photo provided by the Newtown Bee, Connecticut State Police lead children from the Sandy Hook Elementary School in Newtown, Conn., following a reported shooting there Friday, Dec. 14, 2012. (AP Photo/Newtown Bee, Shannon Hicks) MANDATORY CREDIT

Photo: Shannon Hicks, AP

In this photo provided by the Newtown Bee, Connecticut State Police...

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An ambulance leaves Yogananda Street, in Newtown, Conn., where one adult was found dead in a home following the mass shooting at Sandy Hook Elementary School Dec. 14th, 2012.

A school bus carrying high school student drives up Yogananda Street, in Newtown, Conn., where one adult was found dead in a home following the mass shooting at Sandy Hook Elementary School Dec. 14th, 2012.

NEWTOWN, CONN. -- A man opened fire Friday inside two classrooms at Sandy Hook Elementary School, where his mother was a teacher, killing 26 people, including 20 children, as youngsters cowered in corners and closets and trembled helplessly to the sound of shots reverberating through the building.

The 20-year-old killer, carrying two handguns, committed suicide at the school, and another person was found dead at a second scene, bringing the toll to 28, authorities said.

CNN originally identified the shooter as Adam Lanza's brother, Ryan Lanza, 24, a Hoboken, N.J. resident. The AP said Ryan Lanza is being questioned by police in the investigation.

A Facebook page belonging to Ryan Lanza, a former Newtown resident who lived in Hoboken, N.J. who studied at Quinnipiac University in Hamden, has been taken down. Before it was deleted, Ryan Lanza posted on the page and said he wasn't the shooter.

The AP said a police source transposed the names of the brothers, leading to the incorrect info being released.

Police in Sandy Hook are at a house on Yogananda Street and have surrounded it with yellow tape. The house is owned by Lanza's mother, Nancy, according to public records. Sources said Nancy Lanza, was a teacher at Sandy Hook School.

Two victims have been identified, school principal Dawn Lafferty Hochsprung and school psychologist Mary Sherlach.

Hochsprung is being credited with helping to save others by activating the school's public address system during the initial flurry of bullets, according to a law enforcement source.

Hochsprung was a smart, positive, enthusiastic educator, said Danbury Deputy superintendent William Glass.

Glass received confirmation Friday that Hochsprung was killed in the shooting at her school.

Glass hired her for the Danbury schools as an assistant principal.

"She had a tremendous intellect and a wonderful way with children," he said.

"It would not be unusual to see her down on the floor working side by side with students."

She had a wonderful sense of humor and was always smiling.

"That was her trademark," he said." She was an amazing educator. She was everything you would want."

Sherlach, 56, had worked at the school for nearly 20 years, taking her position in 1994.

Former school superintendent John Reed, who knew Sherlock well, praised her for her dedication, warmth and intelligence.

"If there ever was a person, who by qualifications and personality, was made to work with children, to be a school psychologist, it was Mary,'' Reed

A woman who lives near the Lanza family said Adam Lanza, the alleged shooter, was a "reserved" and shy youth who appeared to be "troubled."

"His mother would always say how smart he was," said Beth Israel, who lives in the neighborhood and whose daughter was friends with Lanza while both attended elementary school.

Lanza's parents, Nancy and Peter Lanza, were divorced in 2009 after 28 years of marriage due to "irreconcilable differences," according to court documents.

About nine months after Nancy Lanza filed for the divorce, the couple worked out an agreement that included joint custody of Adam Lanza, who was 17 at the time, although he was to primarly live with his mother, the records state.

Law enforcment officials cited by the Associated Press said Nancy Lanza was a teacher at Sandy Hook Elementary.

State and local police blocked off the neighborhood surrounding a house in Newtown Friday on Yogananda Street that local property records state is owned by Nancy Lanza. According to public records Adam Lanza also lived in the home.

While State Police spokesman Lt. Paul Vance confirmed there was one fatality in a different location other than the school, he declined to identify the victim, but sources indicated it was Nancy Lanza.

The officials cited by the Associated Press said Adam Lanza drove to the school in his mother's car and three guns were found at the scene. Two handguns, a Glock and a Sig Sauer were found inside the school, the officials said, while a .223-caliber rifle was recovered from the back of car in the school parking lot.

An apartment on Grand Street in Hoboken where Ryan Lanza lives was blocked off with police tape. The FBI was on scene and took a computer out of the apartment.

First grade teacher Kaitlyn Roig tells ABC , she rushed 15 kids into a bathroom and barricaded the door to keep them safe after the shooting erupted.

"I put one of my students on top of the toilet. I just knew we had to get in there. I just kept telling them `It's going be OK, you're gonna be all right. I had pulled a bookshelf over before I closed the door so we were completely barricaded in," Roig said.

Mergim Bajraliu, 17, a student at Newtown High School says that he and his mother, Alberta, drove to the high school shortly after receiving a frantic call from one of their neighbors. The woman on the other end of the phone reported hearing what she described as a shotgun blast coming from the school. Bajraliu's nine-year-old sister (Venesa) is a fourth-grader at the school.

They said they saw a police officer carrying the limp body of a young girl who resembled Venesa and Alberta Bajraliu said she feared the worst.

Another girl walked by several minutes later, with "blood from the other people in the shooting," Alberta Bajraliu said.

A parent who picked up their child at the school reported that children were advised by a fireman to close their eyes and run past the office, where the shooting reportedly occurred during an administrators meeting.

At Danbury Hospital, officials were reluctant to give out any specific information, saying only that three victims had been brought there around 10 a.m., within five minutes of one another.

During a press briefing late Friday afternoon, John Murphy, president and CEO of Western Connecticut Health Network, said the hospital had been expecting to receive many more injured people. But the injured people never arrived, presumably because they had died before getting to the hospital.

Bridgeport Hospital spokesman John Cappiello said one woman was brought to the hospital from the Sandy Hook School shooting. Her injuries are not considered life-threatening, he said.

Murphy said the realization that there would be no more injured was "very emotional" and likened it to what it must have been like for hospitals following 9/11 "waiting for scores of injured that did not arrive."

Both Murphy and Patrick Broderick, Danbury Hospital Chairman of Emergency Medicine, said the travesty was painful to them not just as medical professionals, but as members of the greater Danbury community. "This is our home," Broderick said. "These are our neighbors. We care deeply about their well-being."

Murphy said the hospital has always had round the clock crisis intervention services, and has been offering support to families and witnesses within the community. To reach Danbury's crisis intervention services, call 203-739-7007.